Added uncrustify style file.

Intended use: create a consistent coding style across all files automatically. This specifc config is an attempt to automatically fix all issues highlighted by the cpplint.py script from google. It is not fully successful, but at least moved the code in the right direction.

Requires uncrustify:

git clone git://github.com/bengardner/uncrustify.git
cd uncrustify
./configure
make
cp src/uncrustify ~/bin/uncrustify

To see the potential result, run this in DRAMPower source folder (note: this obviously makes local changes, use with care):
uncrustify -c uncrustify.cfg *.cc *.h --no-backup